<section id="concepts">
    <h2>Concepts <span style="float:right; font-size:smaller;"><a href="">&uparrow;</a></span></h2>
    {%- if concept_hierarchy is not none %}
    {{ concept_hierarchy|safe }}
    {%- endif %}
    {%- for concept in concepts %}
    {{ concept[2]|safe }}
    {%- endfor %}
</section>